111P / 233P / 233P-1.5 SERIES Single-Phase Pump Monitor
●The Littelfuse Models 111P (115 V, ¹⁄³ to 1 hp); 233P-1.5 (230 V, ¹⁄³ to 1.5 hp); and 233P (230 V, ¹⁄³ to 3 hp) protect pumps from dry-well, dead-head, jammed impeller, overvoltage/undervoltage conditions, and rapid-cycle protection whether the pressure switch is mounted before or after our unit.
●A calibration adjustment allows the unit to be calibrated to your specific pumping applications, thereby reducing the possibility of false or nuisance tripping. A unique microcontroller-based voltage and current-sensing circuit constantly monitors the incoming power for fluctuations, overcurrent, and undercurrent. When an abnormality, such as loss of suction is detected, the unit deactivates its output relay and directly disconnects the pump motor. The unit then begins its user-selectable restart delay (dry-well recovery) timer. When the timer counts to zero or power is removed and reapplied, the unit reactivates its output relay and turns the pump back on.
●The infrared LED communicates with a hand-held diagnostics tool called the Informer (sold separately). The Informer displays parameters including calibration points, trip points, run time and last faults.
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111P 、 233P 、 233P-1.5 SERIES 、 233P-1.5 、 111P SERIES 、 233P SERIES 、 111P-ENCL 、 233P-ENCL 、 233P-1.5-ENCL |
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Datasheet |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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042619 |
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Rev: 2-C-042619 |
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433 KB |
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